Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 9°F | 25°F | 17°F | 0.7" |
February | 11°F | 29°F | 20°F | 1.1" |
March | 25°F | 44°F | 34°F | 2.2" |
April | 36°F | 60°F | 47°F | 5.1" |
May | 48°F | 71°F | 59°F | 5.0" |
June | 58°F | 81°F | 69°F | 5.4" |
July | 61°F | 84°F | 72°F | 4.2" |
August | 59°F | 82°F | 70°F | 4.0" |
September | 51°F | 76°F | 62°F | 4.3" |
October | 38°F | 62°F | 49°F | 2.7" |
November | 26°F | 47°F | 36°F | 1.5" |
December | 13°F | 29°F | 21°F | 1.4" |
Index | Clear Lake | Iowa | National |
Air quality index | 15 | 39 | 42 |
Pollution index | 1,444,380 | 1,154,535 | 2,726,193 |
Measurement | Total |
Days measured | 118 |
Days with good air quality | 118 |
Days with moderate air quality | 0 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.001% |
Benzene | 0.040% |
Carbon Tetrachloride | 0.002% |
Lead | 0.010% |
Mercury | 0.001% |
City | Population | Air Quality Index | National Avg. |
Forest City, IA | 4,117 | 15 | 70.0% |
Klemme, IA | 652 | 15 | 70.0% |
Thornton, IA | 473 | 15 | 70.0% |
Rock Falls, IA | 161 | 15 | 70.0% |
Garner, IA | 3,060 | 15 | 70.0% |
Clear Lake, IA | 7,594 | 15 | 70.0% |
City | Population | Air Quality Index | National Avg. |
Sioux Center, IA | 7,592 | 35 | 30.0% |
Interlaken, CA | 7,596 | 35 | 30.0% |
West Frankfort, IL | 7,597 | 43 | 14.0% |
Lamar, CO | 7,598 | 20 | 60.0% |
Corning, CA | 7,589 | 41 | 18.0% |
Clear Lake, IA | 7,594 | 15 | 70.0% |